Power source switching control system and power source switching control method

Abstract

In the power source switching control system, a circuit breaker includes a controller and an on/off apparatus. The controller controls, based on a signal of a monitor, the on/off apparatus to adjust an on/off state of a power source connected to the circuit breaker, that is, adjust, from an on state to an off state based on a switch-off signal of the monitor, a working power source that is currently working, and adjust a backup power source from an off state to an on state based on a switch-on signal of the monitor, to implement a process of power source switching between the working power source and the backup power source.

What is claimed is: 
     
       1. A system of switching power sources, comprising:
 a monitor; 
 a hardware interlock circuit connected to the monitor; 
 a first circuit breaker connecting a working power source to the hardware interlock circuit; and 
 a second circuit breaker connecting a backup power source to the hardware interlock circuit, wherein: 
 the monitor sends a first circuit breaker control signal and a second circuit breaker control signal different from the first circuit breaker control signal to the hardware interlock circuit, 
 the hardware interlock circuit sends a switch-off signal to the first circuit breaker to adjust an on/off state of the working power source, and the hardware interlock circuit sends a switch-on signal to the second circuit breaker to adjust an on/off state of the backup power source. 
 
     
     
       2. The system according to  claim 1 , wherein:
 the hardware interlock circuit comprises a logic control apparatus; 
 the logic control apparatus generates the switch-on signal after the logic control apparatus determines that the on/off state of the working power source is adjusted from an on state to an off state. 
 
     
     
       3. The system according to  claim 2 , wherein the logic control apparatus is configured to send, either the first circuit breaker control signal or the second circuit breaker control signal, from the monitor to one of the first circuit breaker or the second circuit breaker. 
     
     
       4. The system according to  claim 1 , wherein the first circuit breaker comprises a first on/off apparatus that includes a first contact configured to: detect the on/off state of the working power source, and send feedback of the on/off state of the working power source to the monitor; and
 wherein the second circuit breaker comprises a second on/off apparatus that includes a second contact, and the second contact is configured to: detect the on/off state of the backup power source, and send feedback of the on/off state of the backup power source to the monitor. 
 
     
     
       5. The system according to  claim 1 , further comprising a sensor, wherein:
 a first terminal of the sensor is connected to the working power source and the backup power source, and is configured to collect a power supply parameter of the working power source and a power supply parameter of the backup power source; and 
 a second terminal of the sensor is connected to the monitor to send the power supply parameter of the working power source and the power supply parameter of the backup power source. 
 
     
     
       6. The system according to  claim 1 , further comprising a busbar, wherein
 the monitor is connected to both the first circuit breaker and the second circuit breaker through the busbar. 
 
     
     
       7. A method, applied to a power source switching control system, wherein the power source switching control system comprises a first circuit breaker connected to a working power source and a second circuit breaker connected to a backup power source, and the method comprises:
 generating, by a monitor, a switch-off signal and a switch-on signal; 
 sending, by the monitor, the switch-off signal to a first controller, wherein the first controller is comprised in the first circuit breaker, the first circuit breaker comprises a first on/off apparatus, and the first on/off apparatus is configured to adjust an on/off state of the working power source under control of the first controller; and 
 sending, by the monitor, the switch-on signal to a second controller, wherein the second controller is comprised in the second circuit breaker, the second circuit breaker comprises a second on/off apparatus, and the second on/off apparatus is configured to adjust an on/off state of the backup power source under control of the second controller. 
 
     
     
       8. The method according to  claim 7 , wherein the method further comprises:
 obtaining, by the monitor, a switch-off feedback signal, wherein the switch-off feedback signal is used to indicate that the on/off state of the working power source is adjusted from an on state to an off state; and 
 after the monitor receives the switch-off feedback signal, sending, by the monitor, the switch-on signal to the second controller. 
 
     
     
       9. The method according to  claim 8 , wherein the obtaining, by the monitor, a switch-off feedback signal comprises:
 receiving, by the monitor, the switch-off feedback signal sent by a first contact, wherein the first contact is comprised in the first circuit breaker, and the first contact is configured to detect the on/off state of the working power source. 
 
     
     
       10. The method according to  claim 8 , wherein the obtaining, by the monitor, a switch-off feedback signal comprises:
 receiving, by the monitor, the switch-off feedback signal sent by a sensor, wherein the sensor is connected to the working power source, and is configured to collect a power supply parameter of the working power source, and the power supply parameter of the working power source comprises the on/off state of the working power source. 
 
     
     
       11. The method according to  claim 8 , wherein the method further comprises:
 sending, by the monitor, a switch-off verification code to the first controller, wherein the switch-off verification code is used by the first controller to verify validity of the switch-off signal. 
 
     
     
       12. The method according to  claim 8 , wherein the method further comprises:
 sending, by the monitor, a switch-on verification code to the second controller, wherein the switch-on verification code is used by the second controller to verify validity of the switch-on signal. 
 
     
     
       13. The method according to  claim 8 , wherein the method further comprises:
 receiving, by the monitor, a switch-on feedback signal sent by a second contact, wherein the second contact is comprised in the second circuit breaker, and the second contact is configured to detect the on/off state of the backup power source. 
 
     
     
       14. The method according to  claim 8 , wherein the method further comprises:
 receiving, by the monitor, a switch-on feedback signal sent by a sensor, wherein the sensor is connected to the backup power source, and is configured to collect a power supply parameter of the backup power source, and the power supply parameter of the backup power source comprises the on/off state of the backup power source. 
 
     
     
       15. A computer-readable storage medium, wherein the computer-readable storage medium is configured to store program instructions, and when the program instructions are run on a computer, the computer is enabled to perform a method, wherein the method further comprises:
 obtaining, by a monitor, a switch-off feedback signal, wherein the switch-off feedback signal is used to indicate that an on/off state of a working power source is adjusted from an on state to an off state; and 
 after the monitor receives the switch-off feedback signal, sending, by the monitor, a switch-on signal to a second controller. 
 
     
     
       16. The system according to  claim 4 , wherein the first contact is configured to control the first on/off apparatus to adjust the on/off state of the working power source from the on state to the off state further based on a switch-off signal of the monitor, wherein the second contact is configured to control the second on/off apparatus to adjust the on/off state of the backup power source from the off state to the on state further based on a switch-on signal. 
     
     
       17. The system according to  claim 2 , the logic control apparatus sends the switch-on signal of the monitor to the second circuit breaker. 
     
     
       18. The system according to  claim 17 , wherein either the first circuit breaker control signal or the second circuit breaker control signal comprises the switch-off signal or the switch-on signal. 
     
     
       19. The method according to  claim 7 , further comprising:
 obtaining, by the monitor, a power source switching instruction; 
 wherein generating, by the monitor, the switch-off signal is further based on the power source switching instruction. 
 
     
     
       20. The method according to  claim 7 , further comprising:
 obtaining, by the monitor, a power source switching instruction; 
 wherein generating, by the monitor, the switch-on signal is further based on the power source switching instruction.